FCS_PRACTICAL_1

"LYNIS" is a security auditing and scanning tool for Unix-based systems. It is used to assess the security defenses of a system by performing various security checks. LYNIS checks for security vulnerabilities, configuration issues, and other potential risks.

The tool is open source and designed to be flexible, providing both individual tests and a report summarizing the overall security status of the system. It's commonly used by system administrators and security professionals to enhance the security posture of Unix-like systems.

To install LYNIS on a Unix-based system, you can follow these general steps.

Below are instructions for a few popular package managers:

Debian/Ubuntu:

1) Open a terminal.
2) Update your package list:
sudo apt-get update
3) Install LYNIS:
sudo apt-get install lynis

Here are some common LYNIS commands:

1. Audit the System:

sudo lynis audit system
This command performs a security audit on the system.

2. View Available Tests:

sudo lynis show tests
This command displays a list of available tests that LYNIS can perform.

3. View System Information:

sudo lynis show info
This command displays information about the system that LYNIS is auditing.

4. Check for LYNIS Updates:

sudo lynis update check
This command checks if there are updates available for LYNIS.

5. Update LYNIS:

sudo lynis update release
This command updates LYNIS to the latest release.

6. View LYNIS Version:

sudo lynis show version
This command displays the installed version of LYNIS.

7. Custom Profile:

sudo lynis audit system --profile
Use a custom profile for the security audit.

8. Quiet Mode (No Output):

sudo lynis audit system --quiet
Run the audit in quiet mode, showing only warnings and errors.

9. View Help and Options:

lynis show help